have to say , after almost 1y of online absence i went on LR 1 server.
i and xrg doesnt seem to understand each other werry well , but some points scored and my way for xfr started.
is there much racing on LR 2 server btw ?
"The difference between Blender internal render and yafray are enormous do to a different methods used to render a scene . To make it more easy i am going to explain what yafray can do that Blender can not do but maybe fake . Yafray try to simulate light behavior like in the real world . When a light hits a wall , the wall reflects light back and this reflected light contributes to lighten the howl room . This is why even objects that are in a shadow zone get a bit light do to the reflected light of other objects . This is something Blender internal render can not reproduce .That's why you get black shadows in Blender if you use one light to lighten your scene because the walls( or any other object) don't reflect the light back when using Blenders internal render. To get a similar result , you will need to add another light to your scene to lighten the shadows but the results will not be the same because yafray lightning is more accurate .Now there is another phenomena that is called caustics . Caustics are produced when light get bend when traveling through glass and produces concentrated light pattern you can see on the table where the glass stays on . This is something Blender can not reproduce , so the only way is to fake it and the results will never be as accurate then rendered with yafray .
So you can see that the difference is that yafra reproduces the real behavior of light and objects . This method is very time consuming in calculation and that's why it takes longer to render .
Blender is optimised for fast rendering and as it don't do all this calculations , it is much faster but not accurate at all ."
lets say You have scene with 1 of those 3 cars , so now press shift + F1
and open .blend file with missing car. double click it.
go to Object folder in that file , select cars elements and load library http://img300.imageshack.us/my.php?image=llblendoz5.jpg